| English noun: sourness | 
| 1. | sourness (cognition) the taste experience when vinegar or lemon juice is taken into the mouth | 
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 | Synonyms | sour, tartness | 
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 | Broader (hypernym) | gustatory perception, gustatory sensation, taste, taste perception, taste sensation | 
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 | Narrower (hyponym) | acidity, acidulousness | 
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| 2. | sourness (attribute) the property of being acidic | 
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 | Synonyms | acidity, sour | 
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 | Broader (hypernym) | taste property | 
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 | Narrower (hyponym) | acerbity, tartness, vinegariness, vinegarishness | 
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| 3. | sourness (attribute) a sullen moody resentful disposition | 
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 | Synonyms | moroseness, sulkiness, sullenness | 
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 | Broader (hypernym) | ill nature | 
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